Whisks & Giggles

Help! My Boston Shaker is Stuck!

How to separate that stubborn 2-tin Boston cocktail shaker.

You’re ready to pour your masterpiece, and the shaker basically says, F-you!, making you want to punch it. We get it…but don’t go all “John Wick” on things, just yet.

Quick Fixes…if You’re Lucky

Pro tip! Try these steps over the sink to help you avoid a mess should your shaker open, unexpectedly. Also, be very careful when dealing with a stuck or frozen-together cocktail shaker. Unexpected things can happen, and safety should always be your priority.

  1. Patience is a Virtue.
    Although there are other tricks to try, this is really the only one you need—leave the shaker sit at room temperature until the frost on the outside melts. A little time and melted ice might be all you need.
  2. Tap it out (2-tin shaker, only).
    Place the shaker on a flat surface. Hold the bottom tin and firmly tap the edge of the top tin with the heel of your hand. This breaks the vacuum seal. Do not try this method with a glass shaker!
  3. Heat / cool combo.
    Wrap a hot, damp towel around the bottom tine for a few seconds. The heat expands the metal, loosening the seal. Still stuck? Alternate this with placing the shaker in the freezer for a (hopefully) supercharged result.
  4. The Rubber Band Hack.
    Wrap a thick rubber band around the edge of the top tin for extra grip. Combine this with a confident twist, and voilà!
  5. Invert and Shake.
    If the drink inside has frozen the seal shut, flip the shaker upside down and shake. The ice can help break things loose.

What Not to Do!

Few things dampen your cocktail enthusiasm faster than a Boston shaker refusing to cooperate. But please, resist the temptation to grab tools—especially knives—to pry the shaker open. You risk injury or damaging your barware. And unless you’re in a cartoon, no mallets, please!

Do not use any open flames, like stove burners, to try to expand the metal tin. The pressure you risk building inside could literally explode the tin, causing a hospital visit in your near future. Stick to the hot towel method mentioned, above.

Why Do Boston Shakers Get Stuck?

The main culprit is temperature. Ice-cold cocktails can cause the metal to contract, creating a tight seal between the tin and the glass. Other factors? Overzealous force when sealing the shaker or vacuum pressure from a vigorous shake session. It’s not you; it’s science.

Pro Tips to Prevent the Great Shaker Struggle

  1. Don’t over-force the seal—just a snug fit will do.
  2. Use a towel to dry the edges of both tins before sealing to avoid liquid freezing between them.
  3. Invest in a quality shaker; they are made of stronger materials that will resist temperature shock and fit together like a glove.
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With these tips, you can shake, sip, and savor without the drama.

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Cocktail Shaker FAQs

What does adding salt to a cocktail do?

Adding a tiny bit of salt or a few drops of 20/80 saline solution to a cocktail will mute bitterness and bring out subtile flavor notes—mainly sweet & sour flavors. Essentially, we want to be using salt in cocktails for the same reasons we use it in cooking.


Learn how to use salt in cocktails.

What is a Boston shaker?

A Boston shaker is a two-piece cocktail shaker that creates its own create a vacuum-tight seal once closed, reducing the likelihood of leakage while shaking. Boston shakers have one larger tin, usually 28-oz capacity, and a smaller glass or metal tin with a 16–18 oz capacity. They tend to be the preferred style of shaker for professional bartenders, and we like Boston-style shakers because of their large internal capacity, helping to efficiently mix, chill, and aerate your cocktails.

Why use fresh fruit syrup for cocktails?

Using a homemade, fresh fruit syrup for your cocktails allows you full control over flavor and sweetness; you can adjust the intensity level by using different amounts of sugar:water:berries. It also gives you a better berry flavor intensity by using the sweetness of the berries in place of some of the sugar but still yielding the same sweetness level.


Learn how to make fresh fruit syrup

What is macerating?

Macerating is the act of soaking fruit in sugar—instead of adding water—in order to draw out its natural juices and enhance the flavor of your syrup, jam, or jelly.

What is “key gin”?

Key gin is a modernized American-style take on gin that uses citrus to build its flavor profile, such as key lime and lemon peel.